network_step2 ( $errors = false )
network_step2:这个动作钩子在网络设置过程的第二步被触发。
打印网络安装过程的步骤2。
function network_step2( $errors = false ) { global $wpdb, $is_nginx; $hostname = get_clean_basedomain(); $slashed_home = trailingslashit( get_option( 'home' ) ); $base = parse_url( $slashed_home, PHP_URL_PATH ); $document_root_fix = str_replace( '\', '/', realpath( $_SERVER['DOCUMENT_ROOT'] ) ); $abspath_fix = str_replace( '\', '/', ABSPATH ); $home_path = 0 === strpos( $abspath_fix, $document_root_fix ) ? $document_root_fix . $base : get_home_path(); $wp_siteurl_subdir = preg_replace( '#^' . preg_quote( $home_path, '#' ) . '#', '', $abspath_fix ); $rewrite_base = ! empty( $wp_siteurl_subdir ) ? ltrim( trailingslashit( $wp_siteurl_subdir ), '/' ) : ''; $location_of_wp_config = $abspath_fix; if ( ! file_exists( ABSPATH . 'wp-config.php' ) && file_exists( dirname( ABSPATH ) . '/wp-config.php' ) ) { $location_of_wp_config = dirname( $abspath_fix ); } $location_of_wp_config = trailingslashit( $location_of_wp_config ); // Wildcard DNS message. if ( is_wp_error( $errors ) ) { echo '<div class="error">' . $errors->get_error_message() . '</div>'; } if ( $_POST ) { if ( allow_subdomain_install() ) { $subdomain_install = allow_subdirectory_install() ? ! empty( $_POST['subdomain_install'] ) : true; } else { $subdomain_install = false; } } else { if ( is_multisite() ) { $subdomain_install = is_subdomain_install(); ?> <p><?php _e( 'The original configuration steps are shown here for reference.' ); ?></p> <?php } else { $subdomain_install = (bool) $wpdb->get_var( "SELECT meta_value FROM $wpdb->sitemeta WHERE site_id = 1 AND meta_key = 'subdomain_install'" ); ?> <div class="error"><p><strong><?php _e( 'Warning:' ); ?></strong> <?php _e( 'An existing WordPress network was detected.' ); ?></p></div> <p><?php _e( 'Please complete the configuration steps. To create a new network, you will need to empty or remove the network database tables.' ); ?></p> <?php } } $subdir_match = $subdomain_install ? '' : '([_0-9a-zA-Z-]+/)?'; $subdir_replacement_01 = $subdomain_install ? '' : '$1'; $subdir_replacement_12 = $subdomain_install ? '$1' : '$2'; if ( $_POST || ! is_multisite() ) { ?> <h3><?php esc_html_e( 'Enabling the Network' ); ?></h3> <p><?php _e( 'Complete the following steps to enable the features for creating a network of sites.' ); ?></p> <div class="notice notice-warning inline"><p> <?php if ( file_exists( $home_path . '.htaccess' ) ) { echo '<strong>' . __( 'Caution:' ) . '</strong> '; printf( /* translators: 1: wp-config.php, 2: .htaccess */ __( 'You should back up your existing %1$s and %2$s files.' ), '<code>wp-config.php</code>', '<code>.htaccess</code>' ); } elseif ( file_exists( $home_path . 'web.config' ) ) { echo '<strong>' . __( 'Caution:' ) . '</strong> '; printf( /* translators: 1: wp-config.php, 2: web.config */ __( 'You should back up your existing %1$s and %2$s files.' ), '<code>wp-config.php</code>', '<code>web.config</code>' ); } else { echo '<strong>' . __( 'Caution:' ) . '</strong> '; printf( /* translators: %s: wp-config.php */ __( 'You should back up your existing %s file.' ), '<code>wp-config.php</code>' ); } ?> </p></div> <?php } ?> <ol> <li><p id="network-wpconfig-rules-description"> <?php printf( /* translators: 1: wp-config.php, 2: Location of wp-config file, 3: Translated version of "That's all, stop editing! Happy publishing." */ __( 'Add the following to your %1$s file in %2$s <strong>above</strong> the line reading %3$s:' ), '<code>wp-config.php</code>', '<code>' . $location_of_wp_config . '</code>', /* * translators: This string should only be translated if wp-config-sample.php is localized. * You can check the localized release package or * https://i18n.svn.wordpress.org/<locale code>/branches/<wp version>/dist/wp-config-sample.php */ '<code>/* ' . __( 'That’s all, stop editing! Happy publishing.' ) . ' */</code>' ); ?> </p> <p class="configuration-rules-label"><label for="network-wpconfig-rules"> <?php printf( /* translators: %s: File name (wp-config.php, .htaccess or web.config). */ __( 'Network configuration rules for %s' ), '<code>wp-config.php</code>' ); ?> </label></p> <textarea id="network-wpconfig-rules" class="code" readonly="readonly" cols="100" rows="7" aria-describedby="network-wpconfig-rules-description"> define( 'MULTISITE', true ); define( 'SUBDOMAIN_INSTALL', <?php echo $subdomain_install ? 'true' : 'false'; ?> ); define( 'DOMAIN_CURRENT_SITE', '<?php echo $hostname; ?>' ); define( 'PATH_CURRENT_SITE', '<?php echo $base; ?>' ); define( 'SITE_ID_CURRENT_SITE', 1 ); define( 'BLOG_ID_CURRENT_SITE', 1 ); </textarea> <?php $keys_salts = array( 'AUTH_KEY' => '', 'SECURE_AUTH_KEY' => '', 'LOGGED_IN_KEY' => '', 'NONCE_KEY' => '', 'AUTH_SALT' => '', 'SECURE_AUTH_SALT' => '', 'LOGGED_IN_SALT' => '', 'NONCE_SALT' => '', ); foreach ( $keys_salts as $c => $v ) { if ( defined( $c ) ) { unset( $keys_salts[ $c ] ); } } if ( ! empty( $keys_salts ) ) { $keys_salts_str = ''; $from_api = wp_remote_get( 'https://api.wordpress.org/secret-key/1.1/salt/' ); if ( is_wp_error( $from_api ) ) { foreach ( $keys_salts as $c => $v ) { $keys_salts_str .= "ndefine( '$c', '" . wp_generate_password( 64, true, true ) . "' );"; } } else { $from_api = explode( "n", wp_remote_retrieve_body( $from_api ) ); foreach ( $keys_salts as $c => $v ) { $keys_salts_str .= "ndefine( '$c', '" . substr( array_shift( $from_api ), 28, 64 ) . "' );"; } } $num_keys_salts = count( $keys_salts ); ?> <p id="network-wpconfig-authentication-description"> <?php if ( 1 === $num_keys_salts ) { printf( /* translators: %s: wp-config.php */ __( 'This unique authentication key is also missing from your %s file.' ), '<code>wp-config.php</code>' ); } else { printf( /* translators: %s: wp-config.php */ __( 'These unique authentication keys are also missing from your %s file.' ), '<code>wp-config.php</code>' ); } ?> <?php _e( 'To make your installation more secure, you should also add:' ); ?> </p> <p class="configuration-rules-label"><label for="network-wpconfig-authentication"><?php _e( 'Network configuration authentication keys' ); ?></label></p> <textarea id="network-wpconfig-authentication" class="code" readonly="readonly" cols="100" rows="<?php echo $num_keys_salts; ?>" aria-describedby="network-wpconfig-authentication-description"><?php echo esc_textarea( $keys_salts_str ); ?></textarea> <?php } ?> </li> <?php if ( iis7_supports_permalinks() ) : // IIS doesn't support RewriteBase, all your RewriteBase are belong to us. $iis_subdir_match = ltrim( $base, '/' ) . $subdir_match; $iis_rewrite_base = ltrim( $base, '/' ) . $rewrite_base; $iis_subdir_replacement = $subdomain_install ? '' : '{R:1}'; $web_config_file = '<?xml version="1.0" encoding="UTF-8"?> <configuration> <system.webServer> <rewrite> <rules> <rule name="WordPress Rule 1" stopProcessing="true"> <match url="^index.php$" ignoreCase="false" /> <action type="None" /> </rule>'; if ( is_multisite() && get_site_option( 'ms_files_rewriting' ) ) { $web_config_file .= ' <rule name="WordPress Rule for Files" stopProcessing="true"> <match url="^' . $iis_subdir_match . 'files/(.+)" ignoreCase="false" /> <action type="Rewrite" url="' . $iis_rewrite_base . WPINC . '/ms-files.php?file={R:1}" appendQueryString="false" /> </rule>'; } $web_config_file .= ' <rule name="WordPress Rule 2" stopProcessing="true"> <match url="^' . $iis_subdir_match . 'wp-admin$" ignoreCase="false" /> <action type="Redirect" url="' . $iis_subdir_replacement . 'wp-admin/" redirectType="Permanent" /> </rule> <rule name="WordPress Rule 3" stopProcessing="true"> <match url="^" ignoreCase="false" /> <conditions logicalGrouping="MatchAny"> <add input="{REQUEST_FILENAME}" matchType="IsFile" ignoreCase="false" /> <add input="{REQUEST_FILENAME}" matchType="IsDirectory" ignoreCase="false" /> </conditions> <action type="None" /> </rule> <rule name="WordPress Rule 4" stopProcessing="true"> <match url="^' . $iis_subdir_match . '(wp-(content|admin|includes).*)" ignoreCase="false" /> <action type="Rewrite" url="' . $iis_rewrite_base . '{R:1}" /> </rule> <rule name="WordPress Rule 5" stopProcessing="true"> <match url="^' . $iis_subdir_match . '([_0-9a-zA-Z-]+/)?(.*.php)$" ignoreCase="false" /> <action type="Rewrite" url="' . $iis_rewrite_base . '{R:2}" /> </rule> <rule name="WordPress Rule 6" stopProcessing="true"> <match url="." ignoreCase="false" /> <action type="Rewrite" url="index.php" /> </rule> </rules> </rewrite> </system.webServer> </configuration> '; echo '<li><p id="network-webconfig-rules-description">'; printf( /* translators: 1: File name (.htaccess or web.config), 2: File path. */ __( 'Add the following to your %1$s file in %2$s, <strong>replacing</strong> other WordPress rules:' ), '<code>web.config</code>', '<code>' . $home_path . '</code>' ); echo '</p>'; if ( ! $subdomain_install && WP_CONTENT_DIR !== ABSPATH . 'wp-content' ) { echo '<p><strong>' . __( 'Warning:' ) . ' ' . __( 'Subdirectory networks may not be fully compatible with custom wp-content directories.' ) . '</strong></p>'; } ?> <p class="configuration-rules-label"><label for="network-webconfig-rules"> <?php printf( /* translators: %s: File name (wp-config.php, .htaccess or web.config). */ __( 'Network configuration rules for %s' ), '<code>web.config</code>' ); ?> </label></p> <textarea id="network-webconfig-rules" class="code" readonly="readonly" cols="100" rows="20" aria-describedby="network-webconfig-rules-description"><?php echo esc_textarea( $web_config_file ); ?></textarea> </li> </ol> <?php elseif ( $is_nginx ) : // End iis7_supports_permalinks(). Link to Nginx documentation instead: echo '<li><p>'; printf( /* translators: %s: Documentation URL. */ __( 'It seems your network is running with Nginx web server. <a href="%s">Learn more about further configuration</a>.' ), __( 'https://wordpress.org/support/article/nginx/' ) ); echo '</p></li>'; else : // End $is_nginx. Construct an .htaccess file instead: $ms_files_rewriting = ''; if ( is_multisite() && get_site_option( 'ms_files_rewriting' ) ) { $ms_files_rewriting = "n# uploaded filesnRewriteRule ^"; $ms_files_rewriting .= $subdir_match . "files/(.+) {$rewrite_base}" . WPINC . "/ms-files.php?file={$subdir_replacement_12} [L]" . "n"; } $htaccess_file = <<<EOF RewriteEngine On RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}] RewriteBase {$base} RewriteRule ^index.php$ - [L] {$ms_files_rewriting} # add a trailing slash to /wp-admin RewriteRule ^{$subdir_match}wp-admin$ {$subdir_replacement_01}wp-admin/ [R=301,L] RewriteCond %{REQUEST_FILENAME} -f [OR] RewriteCond %{REQUEST_FILENAME} -d RewriteRule ^ - [L] RewriteRule ^{$subdir_match}(wp-(content|admin|includes).*) {$rewrite_base}{$subdir_replacement_12} [L] RewriteRule ^{$subdir_match}(.*.php)$ {$rewrite_base}$subdir_replacement_12 [L] RewriteRule . index.php [L] EOF; echo '<li><p id="network-htaccess-rules-description">'; printf( /* translators: 1: File name (.htaccess or web.config), 2: File path. */ __( 'Add the following to your %1$s file in %2$s, <strong>replacing</strong> other WordPress rules:' ), '<code>.htaccess</code>', '<code>' . $home_path . '</code>' ); echo '</p>'; if ( ! $subdomain_install && WP_CONTENT_DIR !== ABSPATH . 'wp-content' ) { echo '<p><strong>' . __( 'Warning:' ) . ' ' . __( 'Subdirectory networks may not be fully compatible with custom wp-content directories.' ) . '</strong></p>'; } ?> <p class="configuration-rules-label"><label for="network-htaccess-rules"> <?php printf( /* translators: %s: File name (wp-config.php, .htaccess or web.config). */ __( 'Network configuration rules for %s' ), '<code>.htaccess</code>' ); ?> </label></p> <textarea id="network-htaccess-rules" class="code" readonly="readonly" cols="100" rows="<?php echo substr_count( $htaccess_file, "n" ) + 1; ?>" aria-describedby="network-htaccess-rules-description"><?php echo esc_textarea( $htaccess_file ); ?></textarea> </li> </ol> <?php endif; // End IIS/Nginx/Apache code branches. if ( ! is_multisite() ) { ?> <p><?php _e( 'Once you complete these steps, your network is enabled and configured. You will have to log in again.' ); ?> <a href="<?php echo esc_url( wp_login_url() ); ?>"><?php _e( 'Log In' ); ?></a></p> <?php } }
要使用` get_users
`函数获取所有用户列表,可以按照以下步骤进行:
1. 使用` get_users
`函数调用获取用户列表:
$users = get_users();
2. 您可以按需使用参数来过滤结果。例如,您可以通过角色、用户ID、用户登录名等过滤用户列表。以下是一个根据用户角色为过滤条件的示例:
$users = get_users( array( 'role' => 'subscriber' // 将角色名称替换为您要过滤的角色 ) );
在上述示例中,将` role
`参数设置为所需的角色名称来过滤用户列表。
3. 您可以使用循环遍历获取的用户列表,并访问每个用户的属性。例如,以下示例将显示每个用户的用户名和电子邮件地址:
foreach( $users as $user ) { echo '用户名:' . $user->user_login . ', 电子邮件:' . $user->user_email . ; }
在上述示例中,通过` $user->user_login
`和` $user->user_email
`访问每个用户的用户名和电子邮件地址。
请注意,` get_users
`函数默认返回所有用户,并可以根据需要使用更多参数进行过滤。您可以参阅WordPress官方文档中的` get_users
`函数文档,了解更多可用参数和用法示例。
总结起来,使用` get_users
`函数获取所有用户列表的步骤是:
get_users
`函数获取用户列表。在WordPress中,可以使用WP_PLUGIN_DIR和WP_PLUGIN_URL常量来定义插件的目录路径和URL。
1. `WP_PLUGIN_DIR`:这是一个常量,用于定义插件的目录路径(文件系统路径)。您可以使用以下代码在插件文件中访问该常量:
$plugin_dir = WP_PLUGIN_DIR . '/your-plugin-folder/';
在上述代码中,将"your-plugin-folder"替换为您插件的实际文件夹名称。使用该常量,您可以获取插件文件的完整路径。
2. `WP_PLUGIN_URL`:这是一个常量,用于定义插件的URL(用于在网页上访问插件文件)。以下是一个使用该常量的示例:
$plugin_url = WP_PLUGIN_URL . '/your-plugin-folder/';
同样,请将"your-plugin-folder"替换为您插件的实际文件夹名称。使用该常量,您可以获取插件在网页上的完整URL。
请注意,`WP_PLUGIN_DIR`和`WP_PLUGIN_URL`常量在WordPress版本2.6之后引入。从WordPress 5.5版本开始,这两个常量被标记为过时(deprecated),因为WordPress更倾向于使用新的插件文件结构。如果您正在开发新插件,建议使用新的插件文件结构和相关函数。
在新的插件文件结构中,可以使用以下函数来获取插件的目录路径和URL:
- `plugin_dir_path()`:获取插件目录路径。
- `plugin_dir_url()`:获取插件URL。
这些函数会自动将插件的版本、多站点和SSL等考虑因素纳入计算。
总结起来,使用`WP_PLUGIN_DIR`和`WP_PLUGIN_URL`常量定义插件的目录和URL的方法是:
$plugin_dir = WP_PLUGIN_DIR . '/your-plugin-folder/'; $plugin_url = WP_PLUGIN_URL . '/your-plugin-folder/';
但请注意,这两个常量已被标记为过时,建议使用新的插件文件结构和相关函数来获取插件的路径和URL。
使用PHP在WordPress中添加自定义功能可以通过以下方式实现:
下面是一个实操示例。
要在WordPress中添加自定义功能,可以按照以下步骤使用PHP编写并添加自定义功能:
// 添加自定义功能示例 // 1. 创建自定义短代码 function custom_shortcode() { return '这是我的自定义短代码内容'; } add_shortcode('custom', 'custom_shortcode'); // 2. 自定义小工具 function custom_widget() { echo '这是我的自定义小工具内容'; } register_widget('custom_widget'); // 3. 自定义菜单 function custom_menu() { register_nav_menu('custom-menu', '自定义菜单'); } add_action('after_setup_theme', 'custom_menu'); // 4. 自定义页面模板 function custom_page_template() { /* Template Name: 自定义模板 */ // 自定义模板的内容和样式 }
请注意,修改主题文件可以在主题更新时丢失,因此建议在进行任何更改之前备份functions.php文件。此外,为避免不必要的错误和冲突,建议在添加自定义功能前先了解WordPress开发文档和最佳实践,以确保正确、安全地实现所需的自定义功能。
使用 do_action
函数可以触发一个钩子函数。do_action
函数的参数与要触发的钩子函数的参数相同。
例如,触发save_post钩子函数的代码如下:
do_action( 'save_post', $post_ID, $post );
这里,$post_ID
和 $post
是传递给钩子函数的参数。
使用 wp_get_current_user
获取当前登录用户的信息:
$current_user = wp_get_current_user(); // 获取当前用户的ID $user_id = $current_user->ID; // 获取当前用户的用户名 $user_login = $current_user->user_login; // 获取当前用户的邮箱 $user_email = $current_user->user_email; // 获取当前用户的显示名称 $display_name = $current_user->display_name;